I just read some of the ANN coverage of the Sentai panel at Kawaiicon. How do we know what cons Sentai will be at? It seems that wherever David Williams goes, a Sentai panel follows, but I don’t know of any good way to find out at what cons he will be (Though I suppose his presence doesn’t guarantee anything). AnimeCons.com is so slow to update that it is rather pointless, and the staff that run it make no guarantees that any anime-affiliated person will be listed unless they are invited to the con as an actual guest. So if Sentai goes to a con as an industry representative, odds are they won’t be listed.
Sadly I haven’t attended a Sentai/ADV panel. ADV stopped its panels when I was getting into fandom and I haven’t found a Sentai panel yet. It shouldn’t be this hard as Sentai has had a small booth at my local Otakon (a con that I’m not really a fan of) for a while now, but they haven’t had any panels there in years. Now that Bandai is probably gone, Otakon needs another industry panel (one that doesn’t suck, cough Aniplex/Funimation cough).
Funimation has a http://www.funimation.com/sully/blog/funimation-convention-explosion/2492691. Does Sentai have a list?